Dead locks



T. TUCKER Feb. 1l, 1964 DEAD LOCKS Filed Aug. v52,2, 1961 INVENTOR725000@ T/ c/ER BY United States Patent Oiiice 3,l2@,97 Patented Feb.Il, 1964 3,120,970 DEAD LCKS Theodore Tucker, 1&4@ FJ. 13th St.,Brooklyn, NX. Filed Ang. 22, lgll, Ser. No. 333,26) S laims. (Cl.292-39).

This invention relates to lock devices of what is generally referred toas the dead lock-type, namely wherein the bolt, or bolts, of the lockare moved into a positive engagement with the bolt engaging plate of thelock in securing a door or other closure against forcible disengagement,thereby rendering the lock substantially jimmy-prooi. More particularly,the invention deals with a loch structure of the character described,wherein the bolt, or bolts, of the lock are moved in two directionalpaths in movement or" the lock from an open to a closed dead lockposition.

Still more particularly, the invention deals with a lock structureemploying a slidable bar controlling and guiding movement of the boltsfrom the open to the locked position.

The novel features of the invention will be best understood from thefollowing description, when talren together with the accompanyingdrawing, in which certain embodiments of the invention are disclosedand, in which, the separate parts are designated by suitable referencecharacters in each of the views and, in which:

FIG. 1 is a diagrammatic face View of a lock made ccording to myinvention, with the covers of the lock parts removed and with parts ofthe construction broken way and in section, the lool: being illustratedin its open position.

FIG. 2 is a partial View, generally similar to FIG. l, illustrating oneor" the bolts of the lock in its locked position.

FIG. 3 is an enlarged sectional plan view of part of a gear and rackcasing of the loclr, with parts of the construction shown in elevationand illustrating the mechanism of the casing in the locked position ofthe lock, as seen in FlG. 2.

FIG. 4 is an enlarged section on the line 4-4 of FlG. 2; and

FIG. 5 is an enlarged sectional View on the broken line 5 5 of FIG. 2.

In illustrating one adaptation and use of my invention, I havediagrammatically shown the two component parts of a loclz withoutreference to detail as to securing of the parts together or the parts torespective supports and, further, without any detail showing of themanually operated means for actuating the lock, these things being allgenerally well-kr1own in the art and, thus, the present showing issimplified to the end of simply illustrating the operative mechanisms ofthe lock.

In the drawing, lil represents the main lock casing and ll representsthe bolt receiving and engaging plate or member. Usually, the latter issecured to a doorframe or fixed support; whereas, the casing is securedto the door. As above stated, the manner of attachment has been omittedfor simpliiication in the present showing.

The casing lil, generally rectangular in form, comprises a plate l2having raised peripheral walls on two sides, as indicated at 13 in FIG.1 of the drawing and at one end, as indicated at 14. The casing lil alsoincludes two raised substantially triangular corner bearing portions l5clearly shown at the left of FIG. 1 of the drawing. Each side wall 13includes an inwardly projecting shoulder portion 16, one of which isseen in section in FIG. 5. These shoulder portions include, adjacent theopen end of the casing lll, upstanding stops 17, checking movement or aslide bar 1S of the lock in movement thereof in the direction of theopen end of the casing lll, as later described.

The bottom wall l2 of the casing 1) has, centrally and longitudinallythereof, a recess 19 in which a gear and raclc casing 2li of the lock isarranged.

As diagrammatically illustrated in FlGS. 4 and 5 of the drawing, theopen face or" the casing lil is closed by a cover 2l which seats uponthe walls 13, 14, 15 and 17 and is suitably fixed thereto. As previouslystated, the showing of these attachments has been omitted to simplifythe present illustration.

Turning now to the plate or member 1l, this member could be described asan elongated box, generally of U-shaped cross-sectional form and open atone side, namely the side facing the casing itl. Considering FlGS. l and2 of the drawing, the plate or member 11 comprises a bottom wall 22,upstanding side walls 23, an end wall 24- and a top closure plate 25,note FIG. 4 ot the drawing. This plate includes, on its inner surface 26adjacent the side walls Z3, bolt engaging lugs 27 having bevelled innersurfaces 2S, as clearly seen in FIG. 4 ot the drawing. The lugs 2'7 arediagrammatically illustrated in section in FIGS. 1 and 2 of the drawing,the section being taken substantially in alinement with the surface 26.

The spacing between inner opposed surfaces 23 of the lugs 27 is such asto freely receive the two lock bolts 29 of the lock in the initial onedirectional movement of the bolts, preparatory to the second directionalmovement of the bolts in engagement with the lugs, as illustrated inFGS. 2 and 4 of the drawing.

As both bolts 29 are of the same construction, the brief description ofone will apply to both. Each bolt 29 has on its upper surface, as viewedin FIG. l of the drawing adjacent its outer end, a transverse recess 39,one wall of which is bevelled, as clearly seen at 3l in FIG. 4 of thedrawing, to establish engagement with the bevelled surface 2S of each ofthe lugs 27. Each bolt 29 also includes, on its lower surface, atransverse recess 32 of an irregular contour, as illustrated in partialsection in FIG. 1 of the drawing on one of the bolts, these recessesproviding free movement of two similar bolt actuating levers 33 pivotedto each bolt, one of these pivots being clearly illustrated at 34 inFIG. 4 of the drawing, the pivots also being diagrammaticallyillustrated in FIG. 1 or" the drawing.

Freely rotatable on suitable screws or other supports on each of thebolts Z9 are three pairs oi anti-frictional rollers, one pair beingindicated at 35 at the right of FlG. l, a generally similar pair beingindicated at 36, the two pairs 35 and 36 operating upon side surfaces 18of the bar llr, as clearly illustrated in FlG. 4 of the drawing, inwhich ligure one roller of each of the pairs 35', 36 is shown and thescrew axis for these rollers is indicated at 3'/ and 33, respectively inFIG. 4. The only difference between the pairs of rollers 35 and thepairs of rollers 36 lies in the fact that one of the rollers in thepairs 36 protrude beyond the side surface of the bolt 29 to operativelyengage the bearings 15, as clearly seen in FIG. l of the drawing, theserollers being identified by the reference numeral 36.

At 39 is shown the third pair of rollers on each of the bolts, thelatter being arranged at the terminal inner end of each bolt. One of therollers 39' of the latter pair projects beyond a side and end surface ofthe bolt to operatively engage one of the bearings 15 when the bolt isin the position shown in FIG. 1, as well as in the position shown inFIG. 2; whereas, the other rollers 39 in each pair 39 projects only fromthe inner end of the bolt to operatively engage the bearing 15 when thebolt is in the position shown in FlG. 2. The bearings 15 serve to guideboth of the bolts, first, in their movement longitudinally in the casing1f), in other words, from left to right in passage of both of the boltsinto the plate or member 11, as well as in guiding the bolts in theirsecond lateral movement, bringing the ends of the bolt into operativeengagement with the lugs 27, as clearly shown in FIGS. 2 and 4 of thedrawing.

In the first aforesaid movement of the bolts, the slidingy bar 18 isguided between the two pairs of rollers 35, 36 which maintains the twobolts in proper alinement in the casing and in the plate or member 11and this movement is checked by the stops 17 engaged by the righthandside surface 18 of the bar 13. This engagement is clearly shown in FIGS.2 and 4 of the drawing.

The corner portions of the bar 18 have upwardly projecting bearing lugs18, note FIGS. 1 and 4, engaging the inner surface of the closure plate21 in maintaining the bar in position on the upper surfaces of bothbolts and in engagement with the two pairs of rollers 35 and 36, as willclearly appear from a consideration of FIG. 4 of the drawing.

The bolts 29 are actuated by the curved levers 33, these levers having acommon pivotal mounting 4f) on a block 41 fixed to a slide 42, generallyL-shaped in cross-sectional form, as noted in FIG. of the drawing, theslide operating in the casing 2f), this casing generally being O-shapedin cross-sectional form.

Suitably fixed to the short leg of the slide 42 is a rack bar 43 whichextends into one side of the block 41, as indicated at 44 in FIG. 3 ofthe drawing. Parts of the long leg of the slide 42 are shown inelevation at 42 in FIG. 3 to clearly illustrate arrangement of the slidein the casing 19 and engagement of the pivot 4@ with the slide. Arrangedin the chamber of the casing 26 beneath the long leg 42 of the slide isa gear or pinion 45 keyed to an operating shaft 46 which projectsoutwardly beyond the wall 12 of the casing 1t), as illustrated, in part,in FIG. 5 of the drawing. One side of the casing 20 is apertured, asseen at Ztl', to facilitate assemblage of the pinion or gear 45 with theshaft 46. The top wall of the casing Ztl has an elongated aperture Z6for guidance of the pivot 40, as clearly noted in FIG. 2 of the drawing.

From the foregoing, it will be apparent that, in rotation of the shaft46 by any suitable means, usually manually operated, in one directionalrotation of the shaft 46, the bolts 29 can be moved from the positionshown in FIG. 1 into the position shown in FIG. 2 and, in the reversedirectional movement of the shaft 46, the bolts will first move from theposition shown in FlG. 2 and return to the normal inoperative positionshown in FIG. l. In the latter position, the engagement of one side edgeof the bar 18 with the bearings checks this inward or retracted movementof the bolts. Final movement of the bolts into the operative positionshown in FIG. 2 is controlled by engagement of outer sides of the boltswith inner surfaces of the shoulders 16, as clearly illustrated in FIGS.2 and 5 of drawing. It will be understood that, in the two rightanglemovements of the bolts, as and when the bar 18 strikes the stops 17, thebolt ends are disposed within the member 11 and, in the continuedrotation of the shaft 46, the levers proceed to move the two boltslaterally in the opposite direction to bring the same into operativeengagement with the lugs 27. It will, thus, be apparent that devices ofthe type and kind under consideration can be utilized in establishingcoupling and uncoupling engagement between two different members orsupports of any type or kind. This is particularly advantageous when thetwo directional movements of the bolts are desired in establishing thecoupling and uncoupling engagement.

For purposes of description, the casing 10 may be said to comprise thebolt part of the device and the member 11 may be said to comprise thebolt engaging part in establishing the coupling engagement between saidparts. Further, the bar 1S may be said to comprise the bolt alining anddirection control element; whereas, the casing 19, including itsassociated parts, such as the rack and gear 43, 45 and the arms 33, maybe said to define the bolt actuating means.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent is:

l. A device of the character described comprising a bolt part and a boltengaging part, the first named part comprising a casing, a bolt movablymounted in the casing, means for actuating the bolt to first move thebolt into the second named part in one directional movement of the boltand then laterally in said part in a second directional movement of thebolt in moving part of the bolt into operative engagement with a lug inthe second named -part in retaining the two parts in coupledrelationship to each other, said casing including a bolt alining anddirectional control element rnovably supported in the casing and movablewith the bolt in the first named directional movement of said bolt, saidbolt actuating means comprising a lever, one end of which is pivoted tothe bolt, the other end of the lever being pivoted to a slide, and meansincluding an operating shaft for moving said slide longitudinally of thecasing.

2. A device as defined in claim 1, wherein said bolt includesanti-frictional means operatively engaging opposed surfaces of saidelement in both directional movements of said bolt.

3. A device as defined in claim 2, wherein the bolt includes otheranti-frictional means operatively engaging a bearing portion in thecasing in both directional movements of Iche bolt in the casing.

4. A device as defined in claim l, wherein said element comprises a bar,the bolt having means engaging opposed surfaces of the bar, and thecasing having means for checking movement of said bar in controlling thefirst directional movement of the bolt in said casing.

5. A device as defined in .claim 4, wherein said last named means guidesIthe Vbolt on the bar in the second directional movement of said bolt.

6. A dead lock of the character described comprising a rectangularcasing, a pair of bolts movably mounted in said casing and adapted toproject through one end thereof, a bolt engaging member at said end ofthe casing, into which the bolts are adapted to be projected, saidmember having a pair of bolt engaging lugs, a bar slidably mounted inthe casing, means placing the bolts in operative engagement with saidbar, bolt actuating means movably mounted in the casing for moving saidbolts first -in one direction into said member, said bar moving with thebolts in said first directional movement thereof, means on the casingengaging the bar checking said first directional movement of the bolt,continued movement of said actuating means moving the bolts in a seconddirection in said member to engage said lugs and longitudinally of saidbar, said first named means maintaining alinement of the bolts in bothdirectional movements thereof, the second named means comprising a slidemovable longitudinally of the casing, means including an operating shaftfor actuating said slide, a pair of levers having a common pivot on theslide, one lever being pivoted to one bolt, the other lever beingpivoted to the other bolt and means in the casing for guiding said slidein its movement therein.

7. A lock as defined in claim 6, wherein the casing includes two cornerbearing portions, said `iii-st named means including two pairs ofanti-frictional devices on each bolt operatively engaging said bar, andanother pair of anti-frictional devices on each bolt operativelyengaging said bearing portions in guidance of the bolts in bothdirectional movements thereof.

8. A lock as defined in claim 7, wherein means is employed for retainingsaid bar in operative engagement with the rst named means in bothdirectional movements of the bolts in the casing.

References Cited in the le of this patent UNITED STATES PATENTS1,186,171 Cohon etal June 6i, 1916 2,002,014 Kemp et al May 21, 19352,240,400 Johnson Apr. 29, 1941

1. A DEVICE OF THE CHARACTER DESCRIBED COMPRISING A BOLT PART AND A BOLTENGAGING PART, THE FIRST NAMED PART COMPRISING A CASING, A BOLT MOVABLYMOUNTED IN THE CASING, MEANS FOR ACTUATING THE BOLT TO FIRST MOVE THEBOLT INTO THE SECOND NAMED PART IN ONE DIRECTIONAL MOVEMENT OF THE BOLTAND THEN LATERALLY IN SAID PART IN A SECOND DIRECTIONAL MOVEMENT OF THEBOLT IN MOVING PART OF THE BOLT INTO OPERATIVE ENGAGEMENT WITH A LUG INTHE SECOND NAMED PART IN RETAINING THE TWO PARTS IN COUPLED RELATIONSHIPTO EACH OTHER, SAID CASING INCLUDING A BOLT ALINING AND DIRECTIONALCONTROL ELEMENT MOVABLY SUPPORTED IN THE CASING AND MOVABLE WITH THEBOLT IN THE FIRST NAMED DIRECTIONAL MOVEMENT OF SAID BOLT, SAID BOLTACTUATING MEANS COMPRISING A LEVER, ONE END OF WHICH IS PIVOTED TO THEBOLT, THE OTHER END OF THE LEVER BEING PIVOTED TO A SLIDE, AND MEANSINCLUDING AN OPERATING SHAFT FOR MOVING SAID SLIDE LONGITUDINALLY OF THECASING.